The other argument about this is whether or not an SWE is a fungible resource.

When you're doing a construction schedule, you might have a pool of carpenters, pool of electricians etc. They can be assigned to the different jobs as a fungible resource, a different carpenter can take over a task just like one power drill can take over another.

We all know that no matter how much ceremony and process, SWEs are not equal, so you can't just move them around randomly.